@InProceedings{Becker-GuedesCanChiSanMon:2019:IoDiMa,
               author = "Becker-Guedes, F{\'a}bio and Candido, Cl{\'a}udia Maria Nicoli 
                         and Chingaranki, Frank and Santos, Stella Pires de Moraes and 
                         Monico, Jo{\~a}o Francisco Galera",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Universidade Estadual Paulista (UNESP)}",
                title = "Ionospheric Disturbance Maps as a Tool for Possible use in Air 
                         Navigation",
                 year = "2019",
         organization = "AGU Fall Meeting",
             abstract = "In this work, we consider an approach to deliver straightforward 
                         ionospheric information in distribution maps of perturbations 
                         around specific locations. The use of GNSS for air navigation has 
                         various benefits, but its real capabilities for high precision 
                         applications depend strongly on our knowledge about the 
                         surrounding conditions of the ionosphere. When such systems are 
                         used, the reliability degree of the obtained data must be 
                         considered with the help of as much additional information as 
                         possible. One way to approach this problem is to probe the 
                         disturbance level of the ionosphere considering the development of 
                         the ROT (Rate of Total Electron Content) and S4 scintillation 
                         index in the vicinity of the regarded sites. At equatorial and 
                         low-latitude regions, the proximity of the geomagnetic equator, 
                         with its recurrent ionospheric irregularities, and the influence 
                         of the equatorial ionization anomaly (EIA), with its large TEC 
                         gradients, can decrease the reliability of GNSS data 
                         significantly. Some case studies were analyzed to create 
                         situational maps and to follow the disturbances time evolution in 
                         sites near the geomagnetic equator and the crest of the EIA. The 
                         objective is to find the probable development of the ionospheric 
                         irregularities position in the subsequent minutes or hours, based 
                         on its initial geographic distribution and considering the current 
                         space weather conditions in a more direct way. This procedure 
                         could be developed to be continuously distributed as ionospheric 
                         warnings by space weather centers. Pilots or air traffic control 
                         facilities could employ this simplified ionospheric disturbance 
                         maps to help their decisions. The maps would serve as an 
                         additional tool to better evaluate what to expect ahead in 
                         individual flights considering the integrity of GNSS-derived 
                         solutions for navigation.",
  conference-location = "San Francisco, CA",
      conference-year = "09-13 dec.",
             language = "en",
           targetfile = "becker_ionospheric.pdf",
        urlaccessdate = "25 abr. 2024"
}